Easy Granny Square Crochet Flower Pattern: Make the Single Zinnia!

There is something deeply satisfying about sitting down with a hook and a few balls of yarn and coming away with something that looks like it took far more effort than it actually did. The granny square is one of crochet’s greatest gifts in that regard — a small, self-contained world of color and texture that you can make in an afternoon and connect into something magnificent over the weeks that follow. But today, we are not making the traditional granny square you might have seen draped across your grandmother’s couch. Today, we are making the Single Zinnia, a flower-centered granny square that looks like a burst of garden sunshine and works up faster than you might expect.

Whether you are a beginner looking for a confidence-building project or an experienced crocheter wanting a fresh square to add to your repertoire, the Single Zinnia granny square is the kind of pattern that earns its place in your collection. By the end of this post, you will have everything you need to make your first one, understand how to customize it, and think about all the ways you can use it once you have a stack of them at your fingertips.

What Is the Single Zinnia Granny Square?

The Single Zinnia is a flower-motif granny square built around a central petal cluster that mimics the cheerful, densely-packed look of a zinnia bloom. Unlike some floral crochet squares that require advanced techniques or lengthy construction, this one is designed to be genuinely accessible. The flower center is worked in the round, and then the background of the square is built up around it in a more traditional granny square construction.

The result is a square with a dimensional floral center, clean background corners, and enough visual interest to stand on its own as a coaster, a patch on a tote bag, or a single decorative element. Repeated across dozens or hundreds of squares, it becomes a blanket, a throw pillow cover, a wall hanging, or a garment panel that genuinely looks impressive.

Zinnias themselves are one of summer’s most joyful flowers — bold, round, and available in nearly every color imaginable. That spirit translates beautifully into yarn. You can make your Single Zinnia in realistic flower shades like coral, yellow, magenta, and orange, or you can go entirely abstract and make them in teal with a burgundy center or lavender with a chartreuse background. The pattern does not care what colors you choose. It will look wonderful regardless.

Materials You Will Need

Before we get into the pattern itself, let us go over the supplies. One of the best things about granny squares in general is that they are low-commitment in terms of materials. You do not need much yarn, which makes them a perfect stash-busting project.

For each Single Zinnia square, you will need a small amount of worsted weight yarn in three colors: one for the flower center (Color A), one for the petals (Color B), and one for the square background (Color C). You can use the same yarn throughout or mix brands as long as the weights are similar. Most crafters use around 10 to 15 yards of Color A, 20 to 25 yards of Color B, and 30 to 40 yards of Color C for a standard-sized square.

You will also need a size 5mm (H-8) crochet hook, which pairs nicely with worsted weight yarn and gives you a square that works up to approximately 6 inches by 6 inches after blocking. If you prefer a smaller or larger square, simply adjust your hook and yarn weight accordingly.

Other supplies include scissors, a yarn needle for weaving in ends, and stitch markers if you like to use them when working in the round. Blocking mats and pins are optional but recommended if you want your finished squares to lie perfectly flat and join cleanly.

Stitches and Abbreviations Used

This pattern uses standard US crochet terminology. Here is a quick reference list of stitches you will encounter.

ch — chain

sl st — slip stitch

sc — single crochet

hdc — half double crochet

dc — double crochet

tr — treble crochet

sp — space

rep — repeat

blo — back loop only

If you are comfortable with these stitches, you are ready to begin. If any of them are new to you, a quick video search will show you exactly what each one looks like in motion, and they are all easier than they sound.

Pattern Notes

This square is worked in joined rounds. After each round, you will join with a slip stitch to the first stitch of that round and then chain up to begin the next round. When changing colors, you will do so as part of your last slip stitch join, drawing the new color through to complete the join and leaving a tail of several inches to weave in later.

The flower center and petals in Rounds 1 through 3 are worked in Color A and Color B. The square background in Rounds 4 and 5 is worked in Color C. If you want more than one round of background, simply repeat the last round, increasing your chain counts in the corners to keep everything flat. This is a great way to make a larger square using the same flower center.

Tension consistency is always helpful in granny squares because you will likely be joining many of them together. Try to work with a relaxed, even tension throughout, and remember that blocking can do a lot of the heavy lifting when it comes to evening out any inconsistencies.

The Single Zinnia Pattern

Round 1 — Flower Center (Color A)

Begin with a magic ring, or chain 4 and join to the first chain to form a ring.

Chain 1. Work 8 single crochets into the ring. Join with a slip stitch to the first single crochet. You now have a small, tight center circle with 8 stitches. Fasten off Color A, leaving a tail.

Round 2 — Inner Petals (Color B)

Join Color B to any stitch of Round 1 with a slip stitch.

Chain 3, treble crochet in the same stitch, chain 3, slip stitch in the same stitch. This creates one petal. Slip stitch into the next stitch of Round 1. Repeat from to in each stitch around, slip stitching between each petal.

You will create 8 petals total, one in each stitch of Round 1. Join the final petal with a slip stitch. Do not fasten off.

Round 3 — Outer Petals (Color B)

To create the second layer of petals that gives the zinnia its full, layered look, you will work behind the inner petals you just made, into the back loop only of Round 1 stitches.

Slip stitch to the back loop of the first stitch of Round 1.

Chain 4, 2 treble crochets in the same back loop, chain 4, slip stitch in the same back loop. This is one outer petal. Slip stitch into the back loop of the next Round 1 stitch. Repeat from to in each back loop around.

You will create 8 outer petals. These will sit behind and slightly larger than the inner petals, giving the flower a dimensional, layered quality that looks complex but was not at all difficult to make. Join with a slip stitch. Fasten off Color B.

Round 4 — Square Foundation (Color C)

This is where the flower becomes a granny square. You will now work around the outside of your flower motif and begin building the corners.

Join Color C to any outer petal with a slip stitch.

Chain 3 (counts as first double crochet). Work 2 double crochets in the same space. Chain 2, 3 double crochets in the same space — this creates the first corner.

Now work along the side: skip to the next petal, slip stitch loosely around that petal’s base, then work 3 double crochets. Continue to the next petal and work the next corner: 3 double crochets, chain 2, 3 double crochets.

Continue working around the flower, placing a cluster of 3 double crochets between corners and a corner cluster of 3 double crochets, chain 2, 3 double crochets at each of the four corners. You will find your natural corner points as you move around the circular flower — they will be roughly evenly spaced if you work your way around evenly.

Join with a slip stitch to the top of the beginning chain 3. (You now have 4 corners and a cluster along each side.)

Round 5 — Square Completion (Color C)

Chain 3 (counts as first double crochet). Work 2 double crochets in the same space.

Work 3 double crochets in the next chain space, then work a corner: 3 double crochets, chain 2, 3 double crochets into the corner chain 2 space. Repeat from around, working 3 double crochets in each space along the sides and the corner cluster with chain 2 at each corner.

Join with a slip stitch to the top of the beginning chain 3. Fasten off and weave in all ends.

Your Single Zinnia granny square is complete.

Tips for Cleaner Results

The flower portion of this square involves working in both the front layer of petals and then dropping back to the Round 1 stitches to create the outer layer. If you find that the outer petals are not sitting behind the inner petals cleanly, try tugging the inner petals gently forward before working each outer petal. This encourages the layers to separate and the dimensional effect will be more pronounced.

When transitioning from the circular flower into the square background, Round 4 can feel a little bit free-form because you are essentially eyeballing the placement of your corner clusters around the circle. Do not be discouraged if your first square looks less than perfectly geometric. After a few repeats, you will develop a feel for where the corners want to land, and your squares will become more consistent naturally.

If you plan to join many squares together, consider ending each square with a joining round instead of a standard final round. The join-as-you-go method saves you from sewing squares together later and is particularly useful for large projects like blankets.

Color Combinations Worth Trying

Color selection can completely transform how the Single Zinnia reads. Here are some combinations that work especially beautifully with this pattern.

For a realistic garden look, try a golden yellow center with bright orange petals and a deep green background. This captures the look of marigolds and zinnias perfectly and would make a stunning kitchen or sunroom throw.

For something more romantic and cottagecore, a dusty pink center with mauve petals against a cream background has an antique, heirloom quality that feels very intentional and sophisticated.

For bold, graphic impact, try a black center with electric teal petals against a white background. This gives the finished square an almost mid-century modern graphic quality that reads beautifully in larger projects.

For a baby shower or nursery project, soft mint petals on a yellow center against a pale lavender background is sweet without being overly saccharine, and the floral motif works beautifully in that context.

If you are making a rainbow blanket, simply repeat the square in different color families across the spectrum and use a neutral like white or cream for all the backgrounds. The consistency of the background color will tie everything together visually even as the flower colors shift dramatically from square to square.

What to Make With Your Single Zinnia Squares

Now that you have mastered the single square, the natural next question is what to do with a whole collection of them.

A baby blanket typically calls for somewhere between 20 and 30 squares, depending on the size of your squares and how large you want the finished piece. At six inches per square, a five-by-six arrangement gives you a blanket that is roughly 30 by 36 inches — a lovely lap size for a baby.

A full-sized throw blanket might use 80 to 100 squares arranged in a ten-by-nine or ten-by-ten grid. This is a significant project time-wise, but because the squares are made individually, you can work on it in small sessions over weeks or months without ever feeling overwhelmed.

Pillow covers are one of the most satisfying quick wins with granny squares. Nine squares arranged in a three-by-three grid will cover a standard 18-inch pillow insert beautifully, and you can make the entire cover in an afternoon if you have a good rhythm going.

Tote bags made from granny squares have a wonderfully bohemian, handmade quality. If you use cotton yarn, the finished bag will be sturdy and washable — practical as well as beautiful.

Wall hangings are another lovely use for a collection of Single Zinnia squares, especially if you make them in a color palette that suits your space. A grid of nine or sixteen squares mounted on a dowel makes a piece of fiber art that looks curated and intentional hanging above a bed or desk.

Joining Methods for Granny Squares

Once you have your squares made, you need to join them. There are several popular methods, each with a slightly different look and feel.

The whip stitch join is done with a yarn needle and creates a raised ridge along the seam. If you use a contrasting color for the joining yarn, this ridge becomes a design element rather than something to hide. It is one of the fastest joining methods and works well for beginners.

The flat slip stitch join is worked with your hook and creates a flat, nearly invisible seam. This is a good choice if you want the squares to read as a continuous fabric rather than a collection of individual units.

The join-as-you-go method, mentioned earlier, eliminates a separate joining step entirely by connecting each new square to its neighbors as you work the final round. This requires a bit more planning at the start but saves considerable time on the back end.

Blocking Your Finished Squares

Blocking is the process of wetting or steaming your crochet pieces and then pinning them to shape and allowing them to dry. It might sound fussy, but for granny squares it genuinely makes a transformative difference. Unblocked squares can be slightly wavy, uneven, or smaller than they could be. Blocked squares lie perfectly flat, have crisp corners, and are visually uniform in size — which matters enormously when you are trying to join them neatly.

For acrylic yarn, steam blocking with a garment steamer or iron held a few inches away from the surface works well. For natural fibers like cotton or wool, a wet block — soaking the square, pressing out the water gently, and pinning it to measurements on a blocking mat — gives the best results.

Final Thoughts

The Single Zinnia granny square is one of those patterns that strikes a beautiful balance between looking impressive and actually being achievable. The layered petal construction creates genuine dimension and visual complexity, but each step is made up of stitches you almost certainly already know. There is no exotic technique required, no special equipment, and no moment where the pattern demands more of you than you are ready to give.

What it does ask for is a little patience with the petal layering in the early rounds and a willingness to trust the process as you transition from a round flower into a square format. Both of those things come quickly with practice, and by your third or fourth square, the whole thing will feel entirely natural.

Make one this afternoon. See how you feel about it. Then make five more and see how they look together. That is usually where the real enthusiasm kicks in — when the individual squares start to multiply and you begin to see the larger piece they are becoming. The Single Zinnia has a way of making even seasoned crafters reach for another ball of yarn.

Happy hooking.